--- title: "Flex AI Workout Trainer & Log - Reviews, Revenue and Downloads in Czechia | Apple App Store" description: "Your AI-Powered Gym Tracker & Personal Trainer Smash your fitness goals with Flex – the ultimate AI workout tracker that plans, tracks, and adapts to your progress. No more guesswork! Whether you're l" --- # Flex AI Workout Trainer & Log — Czechia > Fitness Tracker & Gym Planner ![Flex AI Workout Trainer & Log App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/9f/73/05/9f730546-dd1c-a4c4-b6e0-79c2e33b45b7/flexIcon-0-0-1x_U007ephone-0-1-0-P3-85-220.png/434x0w.png) **Developer:** [Flex Artificial Intelligence](https://apptail.io/developer/flex-artificial-intelligence-pooc) **Category:** Health Fitness **Rating:** 4.4/5 (16 ratings) **Price:** Free **Bundle ID:** com.flexfitnessapp.flexinternal **Store:** Apple App Store **Country:** Czechia **Version:** 3.1 (released 2026-04-09) **Original Release:** 2022-07-23 **Languages:** English, Dutch, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Russian, Chinese, Spanish, Telugu **App Store Link:** [Download on Apple App Store](https://apps.apple.com/cz/app/app/id1446354547) **AppTail Page:** [https://apptail.io/app/flex-ai-workout-trainer-log-vBq/czechia](https://apptail.io/app/flex-ai-workout-trainer-log-vBq/czechia) ## Flex AI Workout Trainer & Log Description Your AI-Powered Gym Tracker & Personal Trainer Smash your fitness goals with Flex – the ultimate AI workout tracker that plans, tracks, and adapts to your progress. No more guesswork! Whether you're lifting weights, building muscle, or losing weight, Flex helps you stay on track and push past plateaux. ============================ Smarter Gym Tracking, Faster Progress - Track every lift & rep automatically – no need for a manual training diary. - AI-driven workouts that adjust difficulty based on your performance. - Track progress visually with real-time charts and streaks. - Sync with Apple Watch for hands-free workout tracking. ============================ Your AI Personal Trainer - Get expert guidance from an AI fitness coach that adapts to you. - Auto-adjusts weight, reps, and sets to maximise strength gains. - Receive reminders & real-time coaching on form, rest time, and intensity. ============================ Build Muscle, Lose Weight, Stay Motivated - Follow structured workout programmes or create your own. - Log every gym session with our lifting log and training diary. - Compete & compare progress with friends in the Flex community. ============================ Free vs. Premium Plans *Free Plan: - Access premade workouts - Track workouts & progress - Customise your training plans *Flex Premium (£8.99/month or £54.99/year): - Apple Watch logging - Auto Progression: Adjusts difficulty automatically - Premium training programmes & freestyle workouts ============================ Download Flex Now – Your AI Coach Awaits! Smash PBs. Track Gains. Train Smarter. Join thousands of lifters & athletes who trust Flex to track workout progress and take their gym routine to the next level. Download now and start lifting smarter! ============================ Follow us for tips & updates: Instagram: @flex.ai TikTok: @flex.app Website: flexfitnessapp.com ## Flex AI Workout Trainer & Log Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e9/ac/64/e9ac64e7-1225-dcb2-1a23-1ae339032929/3.0_-_Hero.jpg/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/e0/b6/1f/e0b61fbf-38f3-cbb0-da57-09e5a84db4e2/3.0_-_GNW.jpg/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/42/b5/62/42b5627b-6aca-b866-7659-d0cebe60879f/3.0_-_Form_Feedback.jpg/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/aa/c9/62/aac96255-cbfe-6595-0cc5-5ac6aeb9da68/3.0_-_AI_Progression.jpg/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/98/1e/47/981e476b-e762-e1e3-b5c7-140220bfb48a/3.0_-_Ask_Lex.jpg/1242x2688.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c7/30/60/c730607f-b356-d7c9-6d9e-1c92b86bb02a/3.0_-_Social__U0026_Share.jpg/1242x2688.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/30/4d/c6/304dc655-38ec-a942-c3fd-cabfa9ae15dc/3.0_-_Leaderboards__U0026_Achievements.jpg/1242x2688.png) ## Flex AI Workout Trainer & Log Rating Breakdown in Czechia - 5 stars: 10 (63%) - 4 stars: 3 (19%) - 3 stars: 2 (13%) - 2 stars: 1 (6%) - 1 stars: 0 (0%) ## Flex AI Workout Trainer & Log Reviews in Czechia ### ***-- "Where is statistics?" Why does the app not give me statistics for my workout? I mean my calories etc Thank you -- _Star_ed_, 2023-12-12 ### ****- "It’s cool but some annoying bugs" Super hard to create own workout plan, because it’s always crushing. But otherwise it’s really cool and helpful -- Smeky32, 2023-03-29 ### ***-- "The App Looks Great, But..." I like the app, it has a great UI and design, but there are a few things that need to be worked on. I would like the user to be able to enter the weight themselves via the keyboard (there is no dumbbell in my gym that is 3.75 kg). I would also change the form of activity that is entered into the Apple Activity app from "Other" to "Strength Training". Improve the app, please. -- Miroslav Herodek, 2023-02-23 ### **--- "Can’t log in" Would be a great app but you constantly cannot log in. -- xkoki10, 2022-12-30 ### ***** "Best Gym App I have come across" Honestly, great job guys. Fantastic app. Great Apple Watch integration. I just need more features to be added (delaying sets due to the machine being occupied etc., combining more plans and being able to have more than one per day - e.g. gym + evening stretching routine). Otherwise great 💪 -- Karel_B, 2022-09-14 [View all Flex AI Workout Trainer & Log reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Flex AI Workout Trainer & Log In-App Purchases | Item | Price | |------|-------| | Premium Yearly Subscription | 1,590.00 č | | Premium Subscription Monthly | 259.00 č | ## Flex AI Workout Trainer & Log Discovered Keywords - gym workouts - uplift - flex fitness ## Apps Similar to Flex AI Workout Trainer & Log - [JEFIT Workout Plan Gym Tracker](https://apptail.io/app/jefit-workout-plan-gym-tracker-Qwb/czechia) - [Gymshark Training and Fitness](https://apptail.io/app/gymshark-training-and-fitness-EQj/czechia) - [GymStreak: AI Personal Trainer](https://apptail.io/app/gymstreak-ai-personal-trainer-HDo/czechia) - [Fitness AI Gym Workout Planner](https://apptail.io/app/fitness-ai-gym-workout-planner-SAq/czechia) - [EvolveYou: Strength For Women](https://apptail.io/app/evolveyou-strength-for-women-ICq/czechia) - 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